EXPRESS PROTRACTOR

EXPRESS PROTRACTORDepending on the processed material from each drill must be properly sharpened. To verify the correct angle will help a specially prepared square plate of copper or aluminium with a thickness of 1 mm.

To become operational protractor enough to cut it cut, as shown in the picture: a large cutout at an angle of 120 degrees, the other half is 60 degrees and the surviving corner of a square is 90.

Recommend to read

  • Canoe like the Indians usedCanoe like the Indians used
    “A canoe made of birch bark... the most convenient and lightest of all means of travel. The bark of one birch tree is usually enough for one canoe; they have such a sensible shape that...
  • MICROVIDEO POLYARNIKMICROVIDEO POLYARNIK
    Central to the exhibition NTTM-78, dedicated to the XVIII Congress of the Komsomol, and the 60th anniversary of the Komsomol, very popular among the visitors enjoyed the section...